作者:Lyubov N. Sobenina、Denis N. Tomilin、Maxim D. Gotsko、Igor A. Ushakov、Boris A. Trofimov
DOI:10.1016/j.tet.2018.02.024
日期:2018.3
menthofuran, a naturally abundant compound, it has been shown for the first time that the furan ring can be readily cross-coupled with acylhaloacetylenes in the solid Al2O3 powder at room temperature to afford the corresponding 2-ethynyl derivatives in up to 88% yield. The reaction represents a ring closing/ring opening process that includes reversible formation of the intermediate cycloadducts further
以天然丰富的化合物薄荷呋喃为例,首次证明呋喃环可以在室温下与固体Al 2 O 3粉末中的酰卤乙炔很容易地交叉偶联,得到相应的2-乙炔基衍生物产率高达 88%。该反应代表闭环/开环过程,包括中间体环加合物的可逆形成,进一步产生乙炔衍生物并消除HHal。